PROCESS FOR PRODUCING A HIGH-PURITY ALUMINA
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United States of America
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Apr 3, 2025
app pub date -
Jan 19, 2023
filing date -
Jan 19, 2023
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Abstract
Provided herein is a process for producing a high-purity alumina, comprising the steps of: (a) sublimation of anhydrous aluminium chloride at a predetermined temperature to recover pure aluminium chloride; (b) dissolving aluminium chloride from step (a) in water to obtain aluminium chloride solution; (c) introducing HCl gas into aluminium chloride solution of step (b) to crystallize aluminium chloride hexahydrate; and (d) calcining aluminium chloride hexahydrate of step (c) to obtain high purity alumina.
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